1. Center for the Environmental Implications of Nanotechnology, Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States
2. Simulation Group, Samsung SDI, Suwon-si 17084, Gyeonggi-do, Republic of Korea
3. Center for the Environmental Implications of Nanotechnology, Department of Civil & Environmental Engineering, Duke University, Durham, North Carolina 27708, United States
4. College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin 300350, P. R. China